DE102004050022A1 - Device for cooling a nozzle for injecting a reducing agent into an engine exhaust system comprises a cooling circuit through which the reducing agent is circulated between injections - Google Patents
Device for cooling a nozzle for injecting a reducing agent into an engine exhaust system comprises a cooling circuit through which the reducing agent is circulated between injections Download PDFInfo
- Publication number
- DE102004050022A1 DE102004050022A1 DE102004050022A DE102004050022A DE102004050022A1 DE 102004050022 A1 DE102004050022 A1 DE 102004050022A1 DE 102004050022 A DE102004050022 A DE 102004050022A DE 102004050022 A DE102004050022 A DE 102004050022A DE 102004050022 A1 DE102004050022 A1 DE 102004050022A1
- Authority
- DE
- Germany
- Prior art keywords
- nozzle
- cooling
- reducing agent
- pump
- cooling circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/11—Adding substances to exhaust gases the substance or part of the dosing system being cooled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1473—Overflow or return means for the substances, e.g. conduits or valves for the return path
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Es ist bekannt, die Stickoxide im Abgas von Brennkraftmaschinen, insbesondere im Abgas von Dieselbrennkraftmaschinen, durch selektive katalytische Reduktion zu vermindern. Zu diesem Zweck wird das Reduktionsmittel, eine wässrige Harnstofflösung, fein zerstäubt in dosierter Menge in den Abgastrakt eingespritzt. Das zur Zerstäubung verwendete Ventil wird durch einen Kühlmittelkreislauf gekühlt, um die Temperatur des in unmittelbarer Nähe zur Abgasleitung angeordneten Ventils und des darin befindlichen Reduktionsmittels niedrig zu halten.It is known, the nitrogen oxides in the exhaust gas of internal combustion engines, in particular in the exhaust of diesel internal combustion engines, through selective catalytic Reduce reduction. For this purpose, the reducing agent, an aqueous one Urea solution, finely atomised In metered quantity injected into the exhaust tract. The valve used for atomization is through a coolant circuit chilled to the temperature of the arranged in close proximity to the exhaust pipe Valve and the reducing agent therein low to hold.
Eine
Einrichtung zur Kühlung
eines derartigen Ventils geht beispielsweise aus der
Der im Patentanspruch 1 angegebenen Erfindung liegt das Problem zu Grunde, Kühlung und Einspritzung mit einfachen Bauteilen ohne aufwendige Steuerung zu realisieren, und dabei die im Kühlkreis umlaufende Menge an Kühlmittel auf den am jeweiligen Betriebszustand orientierten tatsächlichen Kühlbedarf zu begrenzen, um dadurch die erforderliche Pumpenleistung zu minimieren.Of the specified in claim 1 invention is based on the problem cooling and injection with simple components without complex control to realize, and thereby the circulating in the cooling circuit amount coolant on the actual operating condition oriented actual cooling demand limit, thereby minimizing the required pump power.
Dieses Problem wird durch die im Patentanspruch 1 aufgeführten Merkmale dadurch gelöst, dass die Förderstöße einer periodisch pulsweise fördernden Pumpe durch eine Steuereinrichtung aufgeteilt werden in Massenstromstöße zur Kühlung und zur Einspritzung. Eine Einspritzung wird in einfacher Weise dadurch realisiert, dass der Abfluss von Reduktionsmittel, das als Kühlmittel dient, aus dem Kühlkreis, der mit der zur Düse führenden Einspritzleitung hydraulisch verbunden ist, zurück in den Vorratsbehälter unterbrochen ist, so dass ein starker Druckimpuls an der Düse ankommt, die auf den anstehenden hohen Druck anspricht und für eine Einspritzung öffnet. Zur Nutzung eines Förderstoßes für die Kühlung ist die Absperrung des Kühlkreises aufhebbar, so dass der Druck niedrig bleibt, ohne die Düse zu öffnen und die gesamte Druckenergie in Bewegungsenergie für die Umwälzung des Reduktionsmittels im Kühlkreis umgesetzt wird. Zweckmäßigerweise werden ein oder mehrere Förderstöße der Pumpe zwischen zwei Einspritzungen zur Kühlung verwendet.This Problem is solved by the features listed in claim 1 solved by that the subsidies of a periodically pulse-promoting Pump be divided by a control device in mass flow surges for cooling and Injection. An injection is thereby easily realized that the outflow of reducing agent acting as a coolant serves, from the cooling circuit, the one with the nozzle leading Injection line is hydraulically connected, broken back into the reservoir is, so that a strong pressure pulse arrives at the nozzle, which depends on the upcoming high pressure responds and for an injection opens. To use a feed stroke for the cooling is the shut-off of the cooling circuit reversible, so that the pressure remains low without opening the nozzle and the entire pressure energy in kinetic energy for the circulation of the reducing agent in the cooling circuit is implemented. Conveniently, will be one or more pump surges of the pump used between two injections for cooling.
Zur Unterbrechung oder zur Freischaltung des Durchflusses zum Vorratsbehälter dient zum Beispiel ein einfaches Schaltventil, das zwischen zwei Schaltstellungen hin- und herschaltbar ist. Die Ansteuerung des Schaltventils erfolgt zweckmäßigerweise durch ein Steuergerät im Takt der Förderfrequenz der Pumpe. Bei Ausbildung der Pumpe als Konstanthubpumpe wird die Hubfrequenz zur Dosierung der für die Einspritzung und Kühlung erforderlichen Mengen verändert. Als Steuerparameter können Motorbetriebsparameter, Kühlbedarf und/oder Abgaszusammensetzung dienen. Vorzugsweise liegt die Düse in einem Raum des Kühlkreises, der Entnahmeraum für das einzuspritzende Reduktionsmittel ist und zugleich auch von dem zur Kühlung gebrauchten Reduktionsmittel durchströmt ist.to Interruption or to unlock the flow to the reservoir is used For example, a simple switching valve that is between two switch positions can be switched back and forth. The control of the switching valve takes place expediently through a control unit in time with the conveyor frequency the pump. When forming the pump as Konstanthubpumpe is the Stroke frequency for dosing the for the injection and cooling changed required quantities. As control parameters can Engine operating parameters, cooling demand and / or exhaust gas composition. Preferably, the nozzle is in one Room of the cooling circuit, the removal room for is to be injected reducing agent and at the same time of the for cooling flows through used reducing agent.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben:One embodiment The invention is illustrated in the drawing and will be described below described in more detail:
Es zeigen:It demonstrate:
Die
Die
in
Eine
Einspritzung findet statt, wenn das Schaltventil
Das
in
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004050022A DE102004050022B4 (en) | 2004-10-13 | 2004-10-13 | Device for cooling a nozzle for the metered injection of a reducing agent into the exhaust gas tract of an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004050022A DE102004050022B4 (en) | 2004-10-13 | 2004-10-13 | Device for cooling a nozzle for the metered injection of a reducing agent into the exhaust gas tract of an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004050022A1 true DE102004050022A1 (en) | 2006-04-27 |
DE102004050022B4 DE102004050022B4 (en) | 2012-01-05 |
Family
ID=36128789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102004050022A Expired - Fee Related DE102004050022B4 (en) | 2004-10-13 | 2004-10-13 | Device for cooling a nozzle for the metered injection of a reducing agent into the exhaust gas tract of an internal combustion engine |
Country Status (1)
Country | Link |
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DE (1) | DE102004050022B4 (en) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007036272A1 (en) * | 2005-09-27 | 2007-04-05 | Daimler Ag | Device for metering fuel into an exhaust system of an internal combustion engine |
WO2007107396A1 (en) * | 2006-03-21 | 2007-09-27 | Robert Bosch Gmbh | Method and metering system for reducing pollutants in motor vehicle exhaust gases |
WO2007124791A1 (en) * | 2006-05-03 | 2007-11-08 | Purem Abgassysteme Gmbh & Co. Kg | Method and device for metering a reducing agent into the exhaust system of an internal combustion engine |
WO2008058634A1 (en) * | 2006-11-14 | 2008-05-22 | Purem Abgassysteme Gmbh & Co. Kg | Device for metering reducing agent and injector in a device for metering reducing agent |
WO2008058635A1 (en) * | 2006-11-14 | 2008-05-22 | Purem Abgassysteme Gmbh & Co. Kg | Device for metering reducing agent and injector in a device for metering reducing agent |
WO2008079191A1 (en) * | 2006-12-22 | 2008-07-03 | Caterpillar Inc. | Cooled nozzle assembly for urea/water injection |
WO2008110407A1 (en) * | 2007-03-09 | 2008-09-18 | Robert Bosch Gmbh | Metering valve for a liquid medium, in particular an exhaust gas train metering valve |
EP2014885A1 (en) * | 2007-07-09 | 2009-01-14 | Delphi Technologies, Inc. | Injection device for reagent |
WO2009103569A1 (en) * | 2008-02-20 | 2009-08-27 | Robert Bosch Gmbh | Metering system for exhaust gas aftertreatment |
DE102008018945A1 (en) * | 2008-04-15 | 2009-10-22 | J. Eberspächer GmbH & Co. KG | System for supplying reducing agent into exhaust gas stream, particularly in connection with emission control unit for motor vehicles, has tank for reducing agent and nozzle for injecting reducing agent |
EP2175108A1 (en) * | 2008-10-13 | 2010-04-14 | Eaton Corporation | Injector for a fluid injection system |
WO2010072443A1 (en) * | 2008-12-22 | 2010-07-01 | Robert Bosch Gmbh | Device for feeding metered fuel |
CN101984228A (en) * | 2010-10-21 | 2011-03-09 | 中国第一汽车集团公司 | Mechanical pump type SCR urea spraying system |
WO2011162692A1 (en) * | 2010-06-21 | 2011-12-29 | Scania Cv Ab | Method and device pertaining to cooling of dosing units of scr systems |
CN102434544A (en) * | 2011-11-17 | 2012-05-02 | 季裕成 | High-pressure energy recovering system for urea solution |
CN102516129A (en) * | 2011-11-17 | 2012-06-27 | 季裕成 | Production system of urea |
RU2530681C2 (en) * | 2010-06-21 | 2014-10-10 | Сканиа Св Аб | Method and device relevant to batcher temperature limiting in scr systems |
RU2530679C2 (en) * | 2010-06-21 | 2014-10-10 | Сканиа Св Аб | Method and device relevant to batchers cooling in scr systems |
RU2548326C2 (en) * | 2010-06-21 | 2015-04-20 | Сканиа Св Аб | Method and device relevant to batching modules cooling in scr systems |
US9200557B2 (en) | 2010-06-21 | 2015-12-01 | Scania Cv Ab | Method pertaining to air removal from a dosing system at an SCR system and a SCR system |
US9523299B2 (en) | 2010-06-21 | 2016-12-20 | Scania Cv Ab | Method and device pertaining to cooling of dosing units of SCR systems |
CN110073085A (en) * | 2016-12-21 | 2019-07-30 | 珀金斯发动机有限公司 | A kind of improved selective catalytic reduction system operating |
EP3757363A1 (en) * | 2019-06-24 | 2020-12-30 | Delavan, Inc. | Fluid injectors for hot flow |
Families Citing this family (1)
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EP3414435A1 (en) * | 2016-02-09 | 2018-12-19 | Kautex Textron GmbH & Co. Kg | System for storing and delivering an auxiliary liquid to an internal combustion engine of a motor vehicle or to parts of the internal combustion engine of the motor vehicle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998043732A1 (en) * | 1997-04-02 | 1998-10-08 | Clean Diesel Technologies, Inc. | REDUCING NOx EMISSIONS FROM AN ENGINE BY TEMPERATURE-CONTROLLED UREA INJECTION |
US6203770B1 (en) * | 1997-05-12 | 2001-03-20 | Clean Diesel Technologies, Inc. | Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction |
WO2003084647A1 (en) * | 2002-04-03 | 2003-10-16 | Cleaire Advanced Emission Controls, Llc. | Fluid-cooled mount for an injector |
DE10332114A1 (en) * | 2003-07-09 | 2005-01-27 | Robert Bosch Gmbh | Cooled device for metering reducing agent to the exhaust gas of an internal combustion engine |
-
2004
- 2004-10-13 DE DE102004050022A patent/DE102004050022B4/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1998043732A1 (en) * | 1997-04-02 | 1998-10-08 | Clean Diesel Technologies, Inc. | REDUCING NOx EMISSIONS FROM AN ENGINE BY TEMPERATURE-CONTROLLED UREA INJECTION |
US6203770B1 (en) * | 1997-05-12 | 2001-03-20 | Clean Diesel Technologies, Inc. | Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction |
WO2003084647A1 (en) * | 2002-04-03 | 2003-10-16 | Cleaire Advanced Emission Controls, Llc. | Fluid-cooled mount for an injector |
DE10332114A1 (en) * | 2003-07-09 | 2005-01-27 | Robert Bosch Gmbh | Cooled device for metering reducing agent to the exhaust gas of an internal combustion engine |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007036272A1 (en) * | 2005-09-27 | 2007-04-05 | Daimler Ag | Device for metering fuel into an exhaust system of an internal combustion engine |
WO2007107396A1 (en) * | 2006-03-21 | 2007-09-27 | Robert Bosch Gmbh | Method and metering system for reducing pollutants in motor vehicle exhaust gases |
US8671663B2 (en) | 2006-03-21 | 2014-03-18 | Robert Bosch Gmbh | Method and metering system for reducing pollutants in motor vehicle exhaust gases |
WO2007124791A1 (en) * | 2006-05-03 | 2007-11-08 | Purem Abgassysteme Gmbh & Co. Kg | Method and device for metering a reducing agent into the exhaust system of an internal combustion engine |
WO2007124779A1 (en) | 2006-05-03 | 2007-11-08 | Purem Abgassysteme Gmbh & Co. Kg | Process and device for dosing a reducing agent in an exhaust system of an internal combustion engine |
WO2008058634A1 (en) * | 2006-11-14 | 2008-05-22 | Purem Abgassysteme Gmbh & Co. Kg | Device for metering reducing agent and injector in a device for metering reducing agent |
WO2008058635A1 (en) * | 2006-11-14 | 2008-05-22 | Purem Abgassysteme Gmbh & Co. Kg | Device for metering reducing agent and injector in a device for metering reducing agent |
WO2008079191A1 (en) * | 2006-12-22 | 2008-07-03 | Caterpillar Inc. | Cooled nozzle assembly for urea/water injection |
WO2008110407A1 (en) * | 2007-03-09 | 2008-09-18 | Robert Bosch Gmbh | Metering valve for a liquid medium, in particular an exhaust gas train metering valve |
EP2014885A1 (en) * | 2007-07-09 | 2009-01-14 | Delphi Technologies, Inc. | Injection device for reagent |
US8196393B2 (en) | 2007-07-09 | 2012-06-12 | Delphi Technologies Holding S.Arl | Injection device for reagent |
WO2009103569A1 (en) * | 2008-02-20 | 2009-08-27 | Robert Bosch Gmbh | Metering system for exhaust gas aftertreatment |
DE102008018945A1 (en) * | 2008-04-15 | 2009-10-22 | J. Eberspächer GmbH & Co. KG | System for supplying reducing agent into exhaust gas stream, particularly in connection with emission control unit for motor vehicles, has tank for reducing agent and nozzle for injecting reducing agent |
EP2175108A1 (en) * | 2008-10-13 | 2010-04-14 | Eaton Corporation | Injector for a fluid injection system |
US7980483B2 (en) | 2008-10-13 | 2011-07-19 | Eaton Corporation | Injector for a fluid injection system |
WO2010072443A1 (en) * | 2008-12-22 | 2010-07-01 | Robert Bosch Gmbh | Device for feeding metered fuel |
RU2546386C2 (en) * | 2010-06-21 | 2015-04-10 | Сканиа Св Аб | Method and device for cooling of scr-system proportioners |
RU2548326C2 (en) * | 2010-06-21 | 2015-04-20 | Сканиа Св Аб | Method and device relevant to batching modules cooling in scr systems |
US9624807B2 (en) | 2010-06-21 | 2017-04-18 | Scania Cv Ab | Method pertaining to air removal from a liquid supply system and a liquid supply system |
CN103038473A (en) * | 2010-06-21 | 2013-04-10 | 斯堪尼亚商用车有限公司 | Method and device pertaining to cooling of dosing units of SCR systems |
US9523299B2 (en) | 2010-06-21 | 2016-12-20 | Scania Cv Ab | Method and device pertaining to cooling of dosing units of SCR systems |
WO2011162692A1 (en) * | 2010-06-21 | 2011-12-29 | Scania Cv Ab | Method and device pertaining to cooling of dosing units of scr systems |
RU2530681C2 (en) * | 2010-06-21 | 2014-10-10 | Сканиа Св Аб | Method and device relevant to batcher temperature limiting in scr systems |
RU2530679C2 (en) * | 2010-06-21 | 2014-10-10 | Сканиа Св Аб | Method and device relevant to batchers cooling in scr systems |
US9200557B2 (en) | 2010-06-21 | 2015-12-01 | Scania Cv Ab | Method pertaining to air removal from a dosing system at an SCR system and a SCR system |
CN101984228A (en) * | 2010-10-21 | 2011-03-09 | 中国第一汽车集团公司 | Mechanical pump type SCR urea spraying system |
CN102434544A (en) * | 2011-11-17 | 2012-05-02 | 季裕成 | High-pressure energy recovering system for urea solution |
CN102516129B (en) * | 2011-11-17 | 2013-08-07 | 季裕成 | Production system of urea |
CN102516129A (en) * | 2011-11-17 | 2012-06-27 | 季裕成 | Production system of urea |
CN110073085A (en) * | 2016-12-21 | 2019-07-30 | 珀金斯发动机有限公司 | A kind of improved selective catalytic reduction system operating |
CN110073085B (en) * | 2016-12-21 | 2021-12-31 | 珀金斯发动机有限公司 | Improved selective catalytic reduction system |
EP3757363A1 (en) * | 2019-06-24 | 2020-12-30 | Delavan, Inc. | Fluid injectors for hot flow |
US11156141B2 (en) | 2019-06-24 | 2021-10-26 | Delavan Inc. | Fluid injectors for hot flow |
Also Published As
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DE102004050022B4 (en) | 2012-01-05 |
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